[Liz Smith]

I agree with what has been said, I prefer to choose one design and make that design work, improving it along the way. Unfortunately your team seems to be beyond that point.

I suggest you bring this point up as a team group and let everyone give their opinion on the subject. At some point you will need to choose one design, and one robot. I think the sooner, the better...

Everyone likes to fall in love with their designs sometimes, but in the end this is a team effort and the team needs to collectively make a decision. If the team members decide to choose based on effectiveness or based on whether they had a hand in making the machine, it is their personal vote. Eventually a decision needs to be made, you can't compete with 2 robots. I personally would prefer a group decision over a single person's decision (even if they're a mentor) and I would prefer a decision today rather than ship day. It's not one person's robot, so as a team you need to decide on a single machine to compete with.

There are thousands of potential designs that work will work. If you spread you resources out and build 2 designs with half as much effort as you would have if your resources were combined, you'll always have 2 mediocre robots. Hopefully you guys will come together and have everyone work as a team ASAP.

Send a PM if you need any help.